Squirrels fear a variety of predators and threats in their environment. Some common sources of fear include: Birds of prey: Hawks, eagles, falcons, and owls are natural predators of squirrels and can spot them from high above. Mammalian predators: Foxes, coyotes, and domestic cats hunt squirrels, using their sharp senses to locate and attack them. Reptiles: Snakes, especially rattlesnakes and rat snakes, prey on squirrels, especially young or injured ones. Human activities: Hunting, trapping, and habitat destruction by humans also contribute to squirrel fear and vulnerability. Squirrels respond to these threats with evasive actions such as running zigzag patterns, alarm calls, and freezing to blend in with their surroundings.